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Machine vision based automatic maximal clamp measurement tool

  • US 8,879,848 B2
  • Filed: 07/27/2012
  • Issued: 11/04/2014
  • Est. Priority Date: 07/27/2011
  • Status: Active Grant
First Claim
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1. A non-transitory computer accessible memory medium that stores program instructions implementing a clamping tool, wherein the program instructions are executable by a processor to:

  • receive an image, wherein the image includes curves corresponding to one or more objects in the image;

    detect a plurality of curves in a specified region of interest (ROI) in the image, wherein the ROI has a specified direction, and wherein each curve comprises respective curve points;

    determine a convex hull based on the respective curve points;

    determine one or more candidate antipodal point pairs of the convex hull;

    select a first point pair of the one or more antipodal point pairs based on one or more specified constraints;

    determine a clamp angle corresponding to the first point pair;

    determine a distance between the first point pair along a direction specified by the clamp angle; and

    store the first point pair, the distance, and the clamp angle, wherein the first point pair, the distance, and the clamp angle, are useable to analyze the one or more objects.

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